Printer s adjustable chase



(No-Moan.)

D. SNYDER 8?; E. IVINS.

PRINTERS ADJUSTABLE CHASE.

No. 244,682. Patented July 19,1881.

Rs. PhMo-Ukhagnpher, Washington. D c

UNITED STATES PAT T OFFICE.

DANIEL SNYDER AND ELLWOOD IVIN S, OF PHILADELPHIA, PENNSYLVANIA.

PRINTERS ADJUSTABLE CHASE.

SPECIFICATION forming part of Letters Patent No. 244,682, dated July 19, 1881.

' Application filed May 19, 1881. (No model.)

To all whom it may concern:

Be it known that we, DANIEL SNYDER and ELLWOOD IVINs, citizens of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Printers Adjustable Chases, of which the following is a specification.

Our invention relates to certain improvements in adjustable chases or clamps for typeforms, the objects of our invention being to simplify and cheapen the construction of such chases, and to permit the ready tightening of the parts when they become loose from wear.

In the accompanying drawings, Figure l is a perspective view of the improved chase; Fig. 2, a sectional plan 5 Fig. 3, a perspective view of one of the sections of the chase, showing the parts composing the same detached from each other, and Fig. 4, a section of Fig. 1 on the line 1 2, drawn to an enlarged scale.

The chase consists of four strips, A, of sheet 'metal, each bent so as to form two arms, a a,

at right angles to each other, the arm a of each strip having a central slot, 1), adapted for the reception of the stem 61 of a rivet, B, which is secured to thearm a of one of the other strips, so that when the four strips are fitted together .they form a rectangular frame capable of both lateral and longitudinal expansion and contraction to suit type-forms of different sizes, the heads eof the rivets B bearing against the outer faces of the arms a of the strips A with friction sufficient to prevent the accidental dis placement of said strips A when the chase has been applied to the form.

It is necessary that the chase shall bear uniformly on the type-form throughout the length and width of the latter; hence the arm a of each strip must be thickened at and near each edge, so as to embrace the arm a of the adjacent strip, which is reduced in width for this purpose, the inner faces of the thickened edges of the arms a being flush with the inner faces of the armsa, which are adapted thereto, as shown in Fig. 3.

It is advisable thatthe edges of the arms a of the strips should be thickened on the outer sides also, in order to protect the headse of the rivets B; and in order to readily and cheaply accomplish this thickening of the edges of the strips, we adapt thereto stripsf, which are bent over the edges of the strips A and secured thereto by pressure between suitable plates or dies.

By this method ofconstruction, in connection with the use of the rivets B, We are enabled to dispense with the tpnguing and grooving operations ordinarily resorted to in making adjustable chases, and are thus enabled to manufacture the chase more readily and at a much cheaper rate than hitherto, the rivets, moreover, providing a means for continually maintaining the chase in proper condition, as said rivets can be readily tightened to compensate for wear.

It should be understood that what we have alluded to as a chase or clamp is not the permanent chase in which the form is locked for application to the press, but is a temporary chase totake the place of the usual cord tied around the form to hold the same together prior to its application to the regular chase.

\Ve claim as our invention 1. The within-described adjustable chase for type-forms, the same consisting of four strips, A, bent to form arms a a at right angles to each other, the arms a being slotted and the arms a furnished with rivets B,.lhe stems of said rivets being adapted to the slots of the arms a, and the heads of the rivets bearing on the outer faces of said arms, as set forth.

2. The strips A, having arms a a, the arms a carrying rivets B, and the arms a being slotted and provided with strips f, bent over and secured to the edges of the arms, as set forth.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

DANIEL SNYDER. ELLWOOD IVINS. Witnesses:

WM. P. LOGAN, HARRY SMITH. 

